Business Combination (Schedule of Contractually Required Payments Receivable) (Details) - Northwest Bank Branches [Member] $ in Thousands	May 19, 2017 USD ($)
Contractually required payments receivable	$ 125,131
Cash flows expected to be collected	125,131
Accretable FMV adjustments	2,269
Carrying value of loans receivable	$ 122,862

Business combination acquired loans contractually required payments receivable with no signs of credit deterioration.

No definition available.

Name:	shbi_BusinessCombinationAcquiredLoansContractuallyRequiredPaymentsReceivable
Namespace Prefix:	shbi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant